bissen21/Marlin_Firmware
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Setup to find data corruption and general clean up

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This data corruption problem is very difficult.  Just changing the code
a little bit changes whether the problem even happens and what is
affected.  I need these changes in the main branch so I can operate with
the extra debug code always available and turned on.

Everything is setup such that if M100 is turned off or DEBUG(ECHO) is
turned off, the code is not affected.   M100 has been made a little bit
more inteligent so it can display the serial command buffers in a more
meaningful way (because the data corruption seems to often times end up
in that area).
This commit is contained in:
Roxy-3D
2017-04-15 19:14:40 -05:00
committed by Roxy-3D
parent e519e95953
commit 5e9726530f
4 changed files with 118 additions and 86 deletions
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28
Marlin/M100_Free_Mem_Chk.cpp
View File

@ -41,7 +41,7 @@
* Also, there are two support functions that can be called from a developer's C code.
*
* uint16_t check_for_free_memory_corruption(char * const ptr);
* void M100_dump_free_memory(char *ptr, char *sp);
* void M100_dump_routine( char *title, char *start, char *end);
*
* Initial version by Roxy-3D
*/
@ -52,7 +52,9 @@
#if ENABLED(M100_FREE_MEMORY_WATCHER)
#define TEST_BYTE ((uint8_t) 0xE5)
#define TEST_BYTE ((char) 0xE5)
extern char command_queue[BUFSIZE][MAX_CMD_SIZE];
extern char* __brkval;
extern size_t __heap_start, __heap_end, __flp;
@ -78,7 +80,7 @@ char* top_of_stack() {
// Count the number of test bytes at the specified location.
int16_t count_test_bytes(const uint8_t * const ptr) {
for (uint16_t i = 0; i < 32000; i++)
if (ptr[i] != TEST_BYTE)
if (((char) ptr[i]) != TEST_BYTE)
return i - 1;
return -1;
@ -118,8 +120,20 @@ int16_t count_test_bytes(const uint8_t * const ptr) {
}
safe_delay(25);
SERIAL_CHAR('|'); // Point out non test bytes
for (uint8_t i = 0; i < 16; i++)
SERIAL_CHAR(ptr[i] == TEST_BYTE ? ' ' : '?');
for (uint8_t i = 0; i < 16; i++) {
char ccc;
ccc = (char) ptr[i];
if ( &ptr[i]>=&command_queue[0][0] && &ptr[i]<&command_queue[BUFSIZE][MAX_CMD_SIZE]) { // Print out ASCII in the command
if ( ccc<' ' || ccc>0x7e) // buffer area
ccc = ' ';
}
else
if (ccc != TEST_BYTE) // If not display data in the command buffer
ccc = '?'; // area, we flag bytes that don't match the test byte
else
ccc = ' ';
SERIAL_CHAR(ccc);
}
SERIAL_EOL;
ptr += 16;
safe_delay(25);
@ -220,7 +234,7 @@ void init_free_memory(uint8_t *ptr, int16_t size) {
SERIAL_ECHOLNPGM(" bytes of memory initialized.\n");
for (uint16_t i = 0; i < size; i++) {
if (ptr[i] != TEST_BYTE) {
if (((char) ptr[i]) != TEST_BYTE) {
SERIAL_ECHOPAIR("? address : 0x", hex_word((uint16_t)ptr + i));
SERIAL_ECHOLNPAIR("=", hex_byte(ptr[i]));
}
@ -288,7 +302,9 @@ int check_for_free_memory_corruption(char *title) {
// while ( !READ(63))
// idle();
safe_delay(20);
#ifdef M100_FREE_MEMORY_DUMPER
M100_dump_routine( " Memory corruption detected with sp<Heap\n", (char *)0x1b80, 0x21ff );
#endif
}
// Scan through the range looking for the biggest block of 0xE5's we can find